According to the company, Pyro-Putty™ 677, a high-temperature, dielectric adhesive and coating system, can be used to insulate copper coils used in induction heating applications to 2,400°F (1,316°C). Properties of the adhesive include a dielectric strength of 200 V per mil, volume resistivity of 109 ohm-cm, and tensile-shear strength of 450 psi. The putty is supplied in paste consistency with a viscosity of 43,000 cps and specific gravity of 2.17 g/cc. The putty is said to produce a durable shell that protects induction coils from high temperature oxidation and prevents electrical shorts between the coil and metals that are being heat-treated.
Aremco Products, Inc.
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